Ventilator for beneath enclosed structures

Details Ventilator for beneath enclosed structures Ventilator for beneath enclosed structures

1997-09-18

1999-03-16

Wayner, William

Automatic temperature and humidity regulation

Humidity control

165251, 454258, B01F 302, F24F 700

Patent

active

058819517

ABSTRACT:
An apparatus for ventilating the crawl space of a structure, comprising an exhaust fan in a housing adapted to at least partially occlude an aperture in a foundation wall of a structure and oriented to, upon receiving an appropriate stumulus, exhaust crawl space air through said aperture to outside the structure, a temperature sensor and a relative humidity sensor for sensing the respective temperatures and relative humidities of crawl space air and of outside air, and for transmitting respective stimulus dependent thereon to a programmed computer, said computer also adjusting said relative humidity stimulii for temperature-dependent deviation, then determines the absolute moisture differential from said adjusted stimulii and compares said differential to a pre-set minimum absolute moisture differential parameter for ventilation activation, said computer also functionally connected to said fan for controlling the activation thereof

REFERENCES:
patent: 3332620 (1967-07-01), Streed
patent: 4210278 (1980-07-01), Obler
patent: 4964566 (1990-10-01), Pugh
patent: 5253804 (1993-10-01), Sarazen, Jr. et al.
patent: 5294049 (1994-03-01), Trunkle
patent: 5722587 (1998-03-01), Jung

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